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NPR's Jon Hamilton reports on public health efforts to combat sexually transmitted diseases using the internet. The focus is on people who make connections through chat rooms and other meeting places on the web - studies show that these people have a higher risk of having syphilis, gonorrhea and HIV.

Jody Becker of Chicago Public Radio reports a number of charities are looking to the world wide web to help raising funds. But it's hardly a gold mine, and groups hoping for e-donations are finding it will take some time before it will make up a sizable part of their income.

Incoming president Luiz Inacio Lula da Silva is pledging a "zero tolerance" policy on deforestation in the Amazon. But climate scientists warn the damage already done may be irreversible.

The tech giant said in a memo to staff it will require corporate employees to be in office for at least three days a week, starting in May.

New research published in the journal Nature suggests that mass deforestation and fire have dramatically undercut the Amazon's ability to absorb heat-trapping carbon emissions.

Frank talks with Marc Engel, e-commerce analyst at Alexa Research, about a two-year study of how people search on the world wide web. Not surprisingly, the word "sex" was the most popular term people searched for online. (3:00) (for more information, see the website at http://www.alexaresearch

Not since 2008 has the Amazon been destroyed at a faster rate, according to Brazilian authorities. They say an area more than 12 times the size of New York City was deforested in the span of a year.

Amazon workers formed their first union. And at Starbucks, 380 stores are unionized, but not one has a contract. But the big, established unions have won big raises for workers.

The small companies that gave Whole Foods its local-food image are relieved to see Amazon taking over. But their hopes may collide with the online retailer's cost-cutting tactics.

Some Amazon workers in India are speaking out -- saying they want better conditions. One worker explains what it was like to work at a loading dock at an Amazon facility during the recent heatwave.